.copy-code-btn {
    display: none;
    position: absolute;
    right: 8px;
    top: 4px;
    font-size: 12px;
    color: #4d4d4d;
    background-color: white;
    padding: 2px 8px;
    margin: 8px;
    border-radius: 4px;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05), 0 2px 4px rgba(0,0,0,0.05);
    outline: none;
}

#box {
    position: relative;
    width: 800px;
    margin: 40px auto;
}

#code-box {
    position: relative;
    height: 500px;
    overflow: auto;
    padding: 10px;
}